New! View global litigation for patent families

CN102011710B - Wind machine blade - Google Patents

Wind machine blade Download PDF

Info

Publication number
CN102011710B
CN102011710B CN 201010554905 CN201010554905A CN102011710B CN 102011710 B CN102011710 B CN 102011710B CN 201010554905 CN201010554905 CN 201010554905 CN 201010554905 A CN201010554905 A CN 201010554905A CN 102011710 B CN102011710 B CN 102011710B
Authority
CN
Grant status
Grant
Patent type
Prior art keywords
blade
wind
part
section
machine
Prior art date
Application number
CN 201010554905
Other languages
Chinese (zh)
Other versions
CN102011710A (en )
Inventor
王同光
许波峰
Original Assignee
南京航空航天大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Grant date

Links

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GASES [GHG] EMISSION, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction
    • Y02E10/722Components or gearbox

Abstract

The invention relates to a wind machine blade, belonging to the field of wind power generation. The wind machine blade comprises a blade front part and a blade back part; the blade front part is the part from the blade tip part to the blade section (12) with the biggest chord length; the blade back part is the part form the blade section (12) with the biggest chord length to the blade root part; the wind machine blade is characterized in that the blade back part comprises a structure component (9) for mounting blade root and bearing loads of the blade and a pneumatic component (10) for capturing wind energy in turn from inner to outer; a cavity is formed between the structure component (9) and the pneumatic component (10); the shape of the pneumatic component (10) is transitioned from the blade section with the biggest chord length to a pneumatic wing section (2) at the blade root; the specific transition form is obtained by lofting each section wing section at front part of the blade and the pneumatic wing section (2) at the blade root. The wind machine blade of the present invention can use the wind energy in a wind wheel fully, improve the use ratio of the wind energy, and increase the generating capacity of the wind machine.

Description

一种风力机叶片 A wind turbine blade

技术领域 FIELD

[0001] 本发明涉及一种风力机叶片,属风力发电领域。 [0001] The present invention relates to a wind turbine blade, it is wind power. 背景技术 Background technique

[0002] 可再生能源是解决能源危机的最佳途径,而风力发电又是可再生能源行业中发展最迅速、技术最成熟、前景最广阔的行业。 [0002] Renewable energy is the best way to solve the energy crisis, and the wind is the renewable energy industry in the fastest growing and most mature technology, the most broad prospects for the industry. 我国幅员辽阔,风能资源十分丰富,随着科学技术的不断进步,风力发电的经济性不断改善,加之我国已把可再生能源作为我国能源战略的重要组成部分,风力发电拥有巨大的潜在市场。 China has a vast wind energy resources are very rich, with the continuous progress of science and technology, economics of wind power continues to improve, coupled with our Yiba renewable energy as an important part of our energy strategy, wind power has a huge potential market.

[0003] 风力机叶片气动效率的高低决定了一款风力机在市场上的优劣,所以风力机叶片气动外形的设计是风力机设计的关键。 [0003] level of aerodynamic efficiency of the wind turbine blade determines the merits of a wind turbine on the market, so the wind turbine blade aerodynamic shape design is the key wind turbine design. 现在市场主流的大型风力机叶片根部基本都是圆柱体,叶片根部至径向1/5左右处都是近似圆柱体,这样在风轮内部的风能都没有被利用,而且圆柱体对整个尾流流场也会产生影响。 Now the mainstream of large wind turbine blade root is substantially cylindrical, radially around the blade root to 1/5 are approximately cylindrical, so that the wind energy within the wind turbine are not utilized, and the entire cylinder wake the flow field will have an impact. 目前行业内都没有重视该问题,认为叶片根部线速度比较小,而且力臂也比较小,出不出力不会有太大影响。 Currently in the industry have not paid attention to the problem that the blade root line speed is relatively small, and the arm is relatively small, that does not contribute will not have much impact. 因此许多人对叶片的优化都局限于叶片的中部和尖部,不去考虑叶片的根部。 Thus many people are limited to the optimization of the blade central portion and a tip of the blade, do not consider the root of the blade. 利用风力机叶片气动外形优化经典理论即Glauert理论优化的结果在叶根有比较大弦长,但是处于结构和与轮毂连接上的考虑,实际叶片叶根采用圆柱体结构,弦长远小于优化结果。 Optimization of the classical theory of using a wind turbine blade aerodynamic shape i.e. Glauert theoretical optimization results in the blade root has a relatively large chord length, but in the structure and considerations connected with the hub, the blade root actual blades made of a cylindrical configuration, the chord much less than optimal results.

[0004] 有不少专利是通过流动控制手段来提高叶片气动性能,如加襟翼、前缘带旋转圆柱体、射流控制等。 [0004] There are many patents through the flow control means to improve the aerodynamic performance of the blade, such as adding a flap, a leading edge with a rotating cylinder, the jet control. 对于现在已有的风力机叶片来讲,叶根的气动外形还有可优化可改造的余地,而且能够对提高风轮气动性能有很大作用,但目前国内还未见专门针对叶根设计的提高叶片气动性能的相关技术报道。 For existing wind turbine blades now in terms of aerodynamic shape of the blade root there may be room for optimization of transformation, but also plays a significant role in improving aerodynamic performance of wind turbines, but the country has not been designed specifically for blade root improve the aerodynamic performance of the related technical reports blades.

发明内容 SUMMARY

[0005] 本发明的目的是提供一种可以充分利用风轮内部的风能,提高风能利用效率,增加风力机发电量风力机叶片。 [0005] The object of the present invention is to provide a full use of wind inside the wind turbine, the wind energy utilization efficiency increase, increase wind turbine power production of the wind turbine blade.

[0006] 一种风力机叶片,由叶片前部和叶片后部构成,叶片前部即为叶尖部分到叶片最大弦长截面,叶片后部即为叶片最大弦长截面到叶根部分;其特征在于:上述叶片后部由内往外依次包括用于叶根安装并承受叶片载荷的结构部件和用于捕获风能的气动部件组成;上述结构部件与气动部件之间为空腔;上述气动部件的外形由叶片最大弦长处开始过渡至叶根气动翼型处,具体过渡形式通过叶片前部各截面翼型与叶根气动翼型放样得到。 [0006] A wind turbine blade, the blade is made of rear and front blade, the maximum blade tip portion of the front portion is the blade chord cross-section, the rear blade is the maximum cross section of the blade chord to the root portion; the characterized in that: the rear portion of the vane includes, in order from the inside out Yegen An apparatus for receiving and loading of the structural member and the blade member to capture wind energy for the pneumatic composition; a cavity between the structural member and the pneumatic member; and the pneumatic member shape transition from the start to the maximum blade chord length at the root aerodynamic profile, particularly the root transitional forms obtained through the cross section of the aerodynamic profile of the airfoil loft front of the blade.

[0007] 上述叶片前部的外形根据风力机叶片气动外形优化经典理论即Glauert理论得到,能够最大化地捕捉风能。 [0007] The outer shape of the front portion of the blade i.e. Glauert wind turbine blade according to the classical theory of aerodynamic shape optimization theory is, to maximize wind energy capture. 叶片后部的结构部件设计准则是以叶片结构设计为主,气动部件设计准则是以叶片气动设计为主。 Structural design criteria rear blade member is oriented blade design, aerodynamic blade member is a design criteria based aerodynamic design. 这样的设计既能发挥叶根的风能捕捉能力,又能兼顾叶根强大的承载能力。 This design can not only play the root of the wind energy capture capability, while maintaining the Yegen Jiang large carrying capacity.

[0008] 一种风力机叶片,其特征在于:上述气动部件的叶根气动翼型弦长大于结构部件的叶根结构弦长,同时小于叶片最大弦长;叶根气动翼型的外形由以下方式决定:叶根气动翼型外形由与结构型外形相切的5个相切圆弧组成,该5个圆弧依次定义为前缘上圆弧、前缘圆弧、前缘下圆弧、后缘下圆弧、后缘上圆弧;其中前缘上圆弧与结构型外圆内切, 前缘下圆弧与结构型外圆内切,前缘圆弧与前缘上圆弧和前缘下圆弧都内切,后缘上圆弧的圆心在过结构型圆心且与中性线成60°的直线上,与结构型外圆内切,后缘下圆弧的圆心在过结构型圆心且与中性线成-45°的直线上,与结构型外圆外切;上述中性线指过结构型圆心,且垂直于前缘上圆弧和前缘下圆弧的圆心连线;上述后缘下圆弧和后缘上圆弧衔接处形成尾缘厚度,尾缘厚度为结构型直径的0. 5%〜1% [0008] A wind turbine blade, wherein: the pneumatic means described above aerodynamic profile of the blade root chord length greater than the structural member root chord length of the structure, while the blade is smaller than the maximum chord; aerodynamic airfoil blade root profile represented by the following decided: aerodynamic airfoil profile of the blade root by a structural shape 5 tangential tangential arcs, which in turn define the arc 5 at the arcuate leading edge arc, the arc leading edge, a leading edge, the arcuate trailing edge, the trailing edge of a circular arc; wherein the cutting leading edge arcuate outer structure type, with the arcuate cut the lower leading edge structural cylindrical, arcuate leading edge on the leading edge and the arc are lower leading edge arcuate cut inside the circular arc of the trailing edge at the center and through the center to the neutral line of the linear-structure type 60 °, inscribed in the cylindrical type structure, the lower rear edge of the arc in the center through the structure type and to the center on a straight line and the neutral line of -45 °, and an outer cylindrical structured cut; refers to the neutral line through the center type structure, and perpendicular to the leading edge of the leading edge and the arc center of the arc at even line; the above-described trailing edge and a trailing edge arcuate arc converge at the trailing edge thickness is formed, trailing edge thickness of 0.5% ~ 1% of the diameter of the structural 上述叶根气动翼型的相对厚度小于100% ο The relative thickness of the aerodynamic profile of the blade root is less than 100% ο

[0009] 叶根气动翼型的形状与一般的厚翼型类似,上下表面形状的不对称性产生弯度, 提高气动性能。 [0009] The shape of the aerodynamic profile of the blade root and the airfoil thickness is generally similar, generating asymmetry of the shape of the upper and lower camber surface, improving aerodynamic performance. 5个弧形表面的相切连接保证了表面形状曲率半径的连续性,后缘上下圆弧的圆心位置可以有变化,上述位置作为参考值,要保证翼型具有弯度。 Tangential connection 5 ensures the continuity of the curved surface of curvature radius of the surface shape, the trailing edge of the vertical position of the center of the arc can vary, as the position reference values, to ensure that the airfoil having a camber. 相对厚度根据实际风场情况而定,年平均风速较大的风场叶根气动翼型相对厚度大,反之则相对厚度小。 The thickness of the actual circumstances relative wind, annual average wind speed of the wind blade root larger aerodynamic airfoil thickness is relatively large, the thickness is relatively small and vice versa. 尾缘厚度是由实际生产的工艺决定的,叶片上下面尾缘粘接时必然会产生厚度,而且厚尾缘的翼型比尖尾缘的翼型性能会好。 The thickness is determined by the trailing edge of the actual production process, would have a thickness on the trailing edge of the blade below the adhesive, the thickness and the trailing edge of the airfoil tip will be better than the performance of the airfoil trailing edge. 一般的叶片叶根都为圆形,叶片后部大部分为圆柱,风轮旋转时,叶片后部既不能捕捉风能,而且在叶片尾流区产出涡街,破坏流场。 The blade root are generally circular, cylindrical rear portion of the blade most, when the rotor rotates, the rear blade neither capture wind energy, and outputs the blade wake vortex region, the flow field damage. 采用叶根气动翼型的气动部件既能捕捉风能,提供风能利用系数,又能改善流场。 Using pneumatic aerodynamic profile of the blade root member to capture wind energy both to provide power coefficient, but also improve the flow field.

[0010] 上述结构部件和叶片前部可以为一整体;然后气动部件在叶片最大弦长处与结构部件及叶片前部固定连接。 [0010] The structural member and the front portion of the blade may be an integral; and the maximum blade chord length of the structural member and the front portion of the blade member is fixedly connected pneumatically. 这样的结构简单,且很容易实现。 Such a structure is simple and easy to implement. 结构部件与叶片前部的整体性,保证了叶片传力的连续,满足结构设计准则。 The structural integrity of the front portion of the blade member, to ensure the continuous force transmission to meet the design criteria of the blade structure. 气动部件在外形确定单独制造后粘贴至结构部件上及叶片前部与后部交接处(即最大弦长处)。 Determining the aerodynamic shape member attached to the structural member manufactured separately and the front portion and the rear blade junction (i.e. the maximum chord length).

[0011] 上述结构部件的叶根结构翼型可以是半径与叶根法兰半径一致的圆形。 [0011] The configuration of the airfoil blade root the structural member may be consistent with the radius of the root radius of the circular flange. 该结合便于安装。 The combined easy to install.

[0012] 本发明应用范围较广。 [0012] a wide range of applications of the present invention. 可以在叶片设计时叶片前部与后部综合考虑进行设计,也可以在现有圆柱叶根型叶片的基础上,单独设计叶片后部的气动部件,然后将气动部件粘贴至现有叶片上,即本发明可以对现有的叶片进行改造,来提高叶片的气动性能。 The front and the rear portion of the blade may be designed considering the design of the blade, may be cylindrical existing on the root of the blade type, designed to separate the rear aerodynamic blade member, and then stuck to the existing pneumatic blade member, namely, the present invention may be engineered to conventional blades, to improve the aerodynamic performance of the blade.

附图说明 BRIEF DESCRIPTION

[0013] 图1为本发明实施例叶根翼型示意图。 [0013] Fig 1 a schematic view of the airfoil blade root Example embodiments of the present invention.

[0014] 图2为本发明实施例正视图。 [0014] Figure 2 a front view of the embodiment of the present invention.

[0015] 图3为本发明实施例前视图。 [0015] Figure 3 front view of the embodiment of the present invention.

[0016] 图4为利用本发明的实施例叶片与一般叶片的风能利用系数比较。 [0016] 4 as Comparative Example by using the power coefficient of the vane blade of the invention is generally in FIG.

[0017] 图5为利用本发明的实施例叶片与一般叶片的推力系数比较。 [0017] FIG. 5 is a thrust coefficient using the embodiment of the present invention with the blades of the blade generally comparison.

具体实施方式 detailed description

[0018] 图1〜图5为本发明一个实施例叶片的形状和性能。 [0018] FIG. 1 ~ 5 a blade shape and properties Example embodiments of the present invention. 该叶片长度为41米,额定功率1500kW,叶片最大弦长位置距叶根7. 5米,叶根法兰直径为1. 89米。 The blade length of 41 m, 1500kW rated power, the maximum chord length of the blade from the blade root position 7.5 m, the root diameter of the flange of 1.89 m.

[0019] 参照图1,为该实施例的叶根翼型,叶根翼型由结构型1和叶根气动翼型2组成。 [0019] Referring to FIG. 1, for the root of the airfoil embodiment, the airfoil blade root and a blade root structure type 1 Composition 2 aerodynamic profile. 结构型1是半径为R的圆,R由叶根连接法兰的半径确定,结构型1与法兰通过螺栓连接。 1 is structured of a circle of radius R, R is connected by a flange root radius is determined, and a flange type structure by bolts. 叶根气动翼型2由结构型1的部分外形、5个相切圆弧和尾缘厚度8组成,5个相切圆弧分别为前缘上圆弧3、前缘圆弧4、前缘下圆弧5、后缘上圆弧6和后缘下圆弧7。 2 by the aerodynamic profile of the blade root section shape structure type 1, 5 and trailing edge thickness tangential arc 8 composed of five arcs are tangent to a circular arc on the leading edge 3, 4 arc front edge, the leading edge the arc 5, the rear edge of the arcuate trailing edge 6 and a lower arcuate 7. 前缘上圆弧3的圆弧圆心在结构型1圆心正下方2/5R处,圆弧半径为7/5R,与结构型1外圆内切。 3 on the leading edges of the circular arc center of the arc in the center directly below the structure type 1 at 2 / 5R, arc radius of 7 / 5R, and the inner cylindrical structure type 1 cut. 前缘下圆弧5的圆弧圆心在结构型1圆心正上方1/2R处,圆弧半径为3/2R,与结构型1外圆内切。 5 arc center arc in the structure of type 1 at the center directly above the leading edge of the 1 / 2R, the arc radius of 3 / 2R, inscribed in a cylindrical-type structure. 前缘圆弧4与前缘上圆弧3和前缘下圆弧5都内切,半径为1/2R。 A leading edge on the leading edge arcuate arc 3 and 4 and the leading edge 5 are lower arcuate cut inside radius of 1 / 2R. 后缘上圆弧6的圆心在过结构型1圆心且与中性线成60°的直线上,半径为4R,与结构型1外圆内切。 Arcuate trailing edge 6 at the center and through the center into a rectilinear configuration and the neutral line of type 1 60 °, radius 4R, cut within a cylindrical type structure. 后缘下圆弧7的圆心在过结构型1圆心且与中性线成-45°的直线上,半径为2R,与结构型1 外圆外切。 The center of the arc at the trailing edge over the center 7 and the neutral line and into a rectilinear configuration type 1 -45 °, the radius 2R, and an outer cylindrical structured cut. 尾缘厚度8面竖直,厚度为结构型1直径的0. 5%〜1%。 The thickness of the trailing edge of the vertical plane 8, the thickness of the structure type 1 0.5% ~ 1% of the diameter. 该实施例叶根翼型气动型弦长为2. 83米,相对厚度为66. 7%。 This embodiment airfoil aerodynamic profile of the blade root chord length 2.83 m, the relative thickness of 66.7 percent.

[0020] 参照图2,为该实施例叶片的正视图。 [0020] Referring to FIG 2, a front view of the same embodiment of the blades. 叶根与叶片最大弦长截面中间的部分分为结构部件9和气动部件10。 And the maximum blade length of the middle chord root portion into a cross-sectional structural member 9 and the pneumatic member 10. 结构部件9在前0. 5米(叶根至截面11处)是圆柱段,用来埋入螺栓,截面11往后的截面形状通过圆形与叶片最大弦长截面12 (叶片最大弦长处)往后各截面翼型放样得到。 Front structural member 9 0.5 meters (11 to blade root section) is a cylindrical section, for embedded bolt, cross-sectional shape of the maximum cross-sectional subsequent 11 12 (maximum blade chord length) length of the chord through the circular cross section of the blade each back-sectional airfoil loft obtained. 气动部件10是通过叶根气动型与叶片最大弦长截面12往后各截面翼型放样得到。 Each of the pneumatic member 10 is staked to give a cross-sectional airfoil blade root 12 back through the maximum chord cross-section of the blade aerodynamic profile. 叶根结构型部分是叶片主要承载部分,叶根结构型部分与叶中和叶尖为一体, 作为一个整体制造得到。 Root portion is a main structural bearing part of the blade, the root portion of the structural and leaf tip integrally manufactured as a whole obtained. 叶根气动型部分是根据已经设计好的外形单独制造,然后将其粘贴到结构部件上及叶片最大弦长截面12处。 Pneumatic root portion is separately manufactured has been designed according to shape, and paste it to the structural member and the maximum blade chord length at the cross section 12.

[0021] 参照图3,为该实施例叶片的前视图(从叶根往叶尖看),叶片最大弦长截面(12)在距叶根7. 5米处。 [0021] Referring to FIG 3, a front view of that embodiment of the blade (as seen from tip to root), maximum chord cross-section (12) from the blade at the blade root 7.5 m. 气动型与结构型中间形成一个空腔。 Pneumatic type and an intermediate structure to form a cavity.

[0022] 参照图4,为利用本发明设计的实施例叶片与未利用本发明设计的一般叶片风能利用系数的比较。 [0022] Referring to FIG. 4, for the use of embodiments of the present invention, the blade design does not compare with the power coefficient of the blade of the invention is generally designed for use. 可见,利用本发明设计的叶片的风能利用系数大大提高。 Visible, using the blade design of the present invention greatly improve the power coefficient. 特别是在较大叶尖速比(较低风速)时,风能利用系数有较明显的增加,这正对应于全年的高风频,因此年发电量也能明显增加。 Especially in the larger tip speed ratio (low wind speed), wind energy utilization factor has been significantly increased, which corresponds to a positive high-frequency wind throughout the year, so the annual generating capacity can be significantly increased.

[0023] 参照图5,为利用本发明设计的实施例叶片与未利用本发明设计的一般叶片推力系数的比较,叶片与上述叶片相同。 [0023] Referring to FIG. 5, for the use of embodiments of the present invention, the vane design and the design of the present invention does not use the thrust coefficient of the vane is generally compared to the same blade of the blade. 风力利用系数提高后,推力系数却没有增加,而在较大叶尖速比(较低风速)时推力系数稍有减小。 After wind utilization coefficient, but did not increase the thrust coefficient, and the thrust coefficient decreases slightly at higher tip speed ratio (low wind speed).

Claims (3)

  1. 1. 一种风力机叶片,由叶片前部和叶片后部构成,叶片前部即为叶尖部分到叶片最大弦长截面(12),叶片后部即为叶片最大弦长截面(12)到叶根部分;上述叶片后部由内往外依次包括用于叶根安装并承受叶片载荷的结构部件(9)和用于捕获风能的气动部件(10) 组成;上述结构部件(9)与气动部件(10)之间为空腔;其特征在于:上述气动部件(10)的外形由叶片最大弦长处开始过渡至叶根气动翼型(2)处,具体过渡形式通过叶片前部各截面翼型与叶根气动翼型(2)放样得到;上述气动部件(10)的叶根气动翼型(2)弦长大于结构部件的叶根结构弦长,同时小于叶片最大弦长;上述叶根气动翼型(2)的外形由以下方式决定:叶根气动翼型外形由与结构型外形相切的5个相切圆弧组成,该5个圆弧依次定义为前缘上圆弧(3)、前缘圆弧(4)、前缘下圆弧(5)、后缘下圆 A wind turbine blade, constituted by the rear vane and the vane front portion, the front portion to the tip portion of the blade is the maximum chord cross-section (12) blade, the blade maximum chord cross-section is the rear portion of the blade (12) to root portion; the rear portion of the blade from the inside out sequentially Yegen An apparatus comprising a structural member receiving the blade and the load (9) for capturing wind energy and a pneumatic member (10) composition; said structural member (9) and a pneumatic member a cavity (10); characterized in that: a pneumatic outer shape of the member (10) transition from the start of the maximum blade chord length to the aerodynamic profile of the blade root (2), the particular form of transition of each airfoil cross-section through the front portion of the blade stake obtained aerodynamic profile of the blade root (2); the above-described pneumatic aerodynamic profile of the blade root member (10) (2) grew to a structural chord member of the blade root chord structure, while the blade is smaller than the maximum chord; and the blade root pneumatic the airfoil (2) outline determined in the following manner: aerodynamic airfoil profile of the blade root by a structural shape 5 tangential tangential arcs, the arcs 5 on the leading edge in turn defined as an arc (3) circle, the arcuate leading edge (4), the arcuate leading edge (5), a trailing edge 弧(7)、后缘上圆弧(6);其中前缘上圆弧(3)与结构型(1)外圆内切,前缘下圆弧(5)与结构型(1)外圆内切, 前缘圆弧(4)与前缘上圆弧(3)和前缘下圆弧(5)都内切,后缘上圆弧(6)的圆心在过结构型(1)圆心且与中性线成60°的直线上,与结构型(1)外圆内切,后缘下圆弧(7)圆弧的圆心在过结构型(1)圆心且与中性线成-45°的直线上,与结构型(1)外圆外切;上述中性线指过结构型圆心,且垂直于前缘上圆弧(3)和前缘下圆弧(5)的圆心连线;上述后缘下圆弧(7)和后缘上圆弧(6)衔接处形成尾缘厚度(8),尾缘厚度(8)为结构型(1)直径的0. 5%〜1% ;上述叶根气动翼型(2)的相对厚度小于100%。 Arc (7), the arcuate trailing edge (6); wherein the arc (3) with structure type (1) on the leading edge of the cut cylindrical, arcuate leading edge (5) and the structured (1) the outer endo, arcuate leading edge (4) and the arc (3) and the leading edge at a circular arc (5) on the leading edge are cut inside the circular arc on the trailing edge (6) of the over-center type structure (1) and the center and the neutral line of 60 ° to a straight line, and the structure type (1) within the cylindrical cut, the arcuate trailing edge (7) in the center of the arc through structure-type (1) -45 and the center and the neutral line ° a straight line, and the structure type (1) an outer cylindrical cut; refers to the neutral line through the center type structure, and perpendicular to the arc (3) and the leading edge at a circular arc (5) connecting the centers of the front edge ; arc above the trailing edge (7) and a trailing edge arc (6) is formed at the trailing edge thickness of the adapter (8), the thickness of the trailing edge (8) of the structure type (1) 0.5% ~ 1% of the diameter ; relative thickness of the aerodynamic profile of the blade root (2) is less than 100%.
  2. 2.根据权利要求1所述的一种风力机叶片,其特征在于:上述结构部件(9)和叶片前部为一整体;上述气动部件(10)在叶片最大弦长处与结构部件(9)及叶片前部固定连接。 2. A wind turbine blade according to claim 1, wherein: said structural member (9) and a front portion of the blade as a whole; and the pneumatic means (10) of the blade maximum chord length of the structural member (9) and a blade fixed to the front portion.
  3. 3.根据权利要求1所述的一种风力机叶片,其特征在于:上述结构部件(9)的叶根结构型(1)是半径与叶根法兰半径一致的圆形。 3. A wind turbine blade according to claim 1, wherein: said structural member (9) of the blade root structure of type (1) is consistent with the radius of the root radius of the circular flange.
CN 201010554905 2010-11-23 2010-11-23 Wind machine blade CN102011710B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201010554905 CN102011710B (en) 2010-11-23 2010-11-23 Wind machine blade

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201010554905 CN102011710B (en) 2010-11-23 2010-11-23 Wind machine blade

Publications (2)

Publication Number Publication Date
CN102011710A true CN102011710A (en) 2011-04-13
CN102011710B true CN102011710B (en) 2012-07-18

Family

ID=43842005

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201010554905 CN102011710B (en) 2010-11-23 2010-11-23 Wind machine blade

Country Status (1)

Country Link
CN (1) CN102011710B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103629056B (en) * 2013-12-23 2017-01-04 北京天源科创风电技术有限责任公司 On a fan blade of the fan blade and the use of

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2869370Y (en) 2006-01-20 2007-02-14 陈向阳 Wind wheel blade for small-sized wind mill generator
CN101300419A (en) 2005-10-17 2008-11-05 Lm玻璃纤维制品有限公司 Blade for a wind turbine rotor
EP2187045A1 (en) 2007-11-19 2010-05-19 Mitsubishi Heavy Industries, Ltd. Windmill blade and wind power generator using same
CN101737249A (en) 2009-12-25 2010-06-16 阳江市新力工业有限公司 Wind power blade

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2107235A1 (en) * 2008-04-02 2009-10-07 Lm Glasfiber A/S A wind turbine blade with an auxiliary airfoil

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101300419A (en) 2005-10-17 2008-11-05 Lm玻璃纤维制品有限公司 Blade for a wind turbine rotor
CN2869370Y (en) 2006-01-20 2007-02-14 陈向阳 Wind wheel blade for small-sized wind mill generator
EP2187045A1 (en) 2007-11-19 2010-05-19 Mitsubishi Heavy Industries, Ltd. Windmill blade and wind power generator using same
CN101737249A (en) 2009-12-25 2010-06-16 阳江市新力工业有限公司 Wind power blade

Also Published As

Publication number Publication date Type
CN102011710A (en) 2011-04-13 application

Similar Documents

Publication Publication Date Title
CN201581934U (en) Half-speed high-capacity nuclear turbine last-stage movable blade
CN102230444A (en) Arm-length-variable vertical shaft tide current water turbine generator set
CN201581936U (en) Special last-stage vane for large-scale 60Hz turbine
US8419373B1 (en) Wind turbine blade, wind turbine generator equipped with wind turbine blade and method of designing wind turbine blade
US20120099997A1 (en) Vertical Axis Wind Turbine
CN200958460Y (en) Umbrella-type adjusting windmill
CN201159137Y (en) Elevating force and resistance mixed vertical axis aerogenerator
CN2876367Y (en) Large deflection wind force machine wing shape
CN101793225A (en) Support rod of vertical axis wind turbine
CN1563707A (en) Horizontal shaft wind mill with small sharp wing
CN202065123U (en) Combined efficient vertical axis wind driven generator
CN102046965A (en) A wind turbine blade with an auxiliary airfoil
CN201574886U (en) Combination-type vertical axis wind generator
CN101555859A (en) Francis turbine runner with ultra-low specific rotating speed specially used for driving cooling tower fan
CN101915218A (en) Wind power generating set with vertical shaft
US8303250B2 (en) Method and apparatus for increasing lift on wind turbine blade
CN2813914Y (en) Resistance and lift force compound wind power equipment
CN201884213U (en) Wind power generator with vertical shaft
US20100266414A1 (en) Fluid energy converter
CN201241797Y (en) Wind power generator
CN102322407A (en) Aerodynamic configuration collaborative design method for wind turbine blade
CN103097722A (en) Wind turbine blade with narrow shoulder and relatively thick airfoil profiles
CN201461225U (en) Blades of large-scale wind generating set of split structure
CN102305174A (en) Blade with constant cross section, forming method and horizontal axis wind turbine impeller comprising same
CN200978778Y (en) Windwheel blade for small-sized wind-driven generator

Legal Events

Date Code Title Description
C06 Publication
C10 Entry into substantive examination
C14 Grant of patent or utility model
ASS Succession or assignment of patent right

Owner name: JIANGSU LIVON AUTOMOBILE COMPONENTS TECHNOLOGY CO.

Free format text: FORMER OWNER: NANJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICS

Effective date: 20130121

C41 Transfer of patent application or patent right or utility model
COR Change of bibliographic data

Free format text: CORRECT: ADDRESS; FROM: 210016 NANJING, JIANGSU PROVINCE TO: 211178 NANJING, JIANGSU PROVINCE